Rails and DB2 for z/OS

I am new to RoR and I do like it a lot for dellivering data centric
web applications. It is much better than what I've been used to. One
area I am interested in is the behavior with DB2, including zOS. I
have gotten the ibm_db gem installed and everything basic works. I do
wonder if it is possible to alter the database that the tables get
created in through rails. The issue is that the term database on zOS
is something very different (a logical construct really) and the
default for tables in DSNDB04 which is OK but certainly not ideal.